The mysteries of the atom by Harold A Wilson

By Harold A Wilson

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Points where and points where two crests are superposed are marked + two troughs come together, Points where a trough and a crest are superposed are marked 0. see that the and points lie on parallel lines, and that the points lie in . We + between. Where two crests come together there will be a crest twice two sets, and where two as high as the crests in either of the MYSTERIES OF THE ATOM 38 troughs come together, a trough twice as deep. Thus along the and lines the two sets of waves will unite to give + waves twice as great as the waves in either set.

Some of the red light from the first slit falls on the two slits TT, and screen is goes through them onto the white screen EF. This thus illuminated by two beams of red light. If TT two slits is covered up there is a uniform of red the on screen. With both slits open the patch light patch on the screen is not uniform, but consists of narrow either of the This remarkable bright bands with dark bands in between. experimental result can be explained by supposing that each FIG. 10 of the two slits TT sends at the screen in the way out a train of waves which interfere explained above.

This scattering was carefully studied by Lord Rutherford, and he showed that could be explained by supposing that the gold a very small heavy particle strongly with This particle is called the charged positive electricity. nucleus of the atom and it contains all the protons. The it atoms each contain charge on the nucleus xjan be estimated from the way in which the alpha-rays are scattered. The positively charged nucleus repels the positively charged rays so that a ray is deflected as it passes by a nucleus, and the nearer the ray goes to the nucleus, the more it is deflected.

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